Timna, or Timnah

Smith’s Bible Dictionary · William Smith, F. N. Peloubet, M. A. Peloubet

(restraint).

A concubine of Eliphaz son of Esau, and mother of Amalek (Genesis 36:12) it may be presumed that she was the same as Timna sister of Lotan. Ibid. ver. 22, and (1 Chronicles 1:39) (B.C. after 1800.)
A duke or phylarch of Edom in the last list in (Genesis 36:40-43; 1 Chronicles 1:51-54) Timnah was probably the name of a place or a district. [See the following article]

In other dictionaries

William Smith; revised by F. N. Peloubet and M. A. Peloubet; CrossWire SWORD module Smith 1.3

Bible Strong digital edition from CrossWire module 1.3, based on the 1884 Peloubet revision with later digital enrichments preserved